CN212253396U - Frostless heat pump drying device - Google Patents
Frostless heat pump drying device Download PDFInfo
- Publication number
- CN212253396U CN212253396U CN202020941536.4U CN202020941536U CN212253396U CN 212253396 U CN212253396 U CN 212253396U CN 202020941536 U CN202020941536 U CN 202020941536U CN 212253396 U CN212253396 U CN 212253396U
- Authority
- CN
- China
- Prior art keywords
- evaporator
- heat pump
- refrigerant
- condenser
- pump drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The embodiment of the application provides a frostless heat pump drying device, and relates to the technical field of drying equipment. The frostless heat pump drying device comprises a compressor, a condenser, an evaporator and a supercooling defrosting section; the compressor is used for sucking refrigerant and compressing the refrigerant; the condenser is connected with the compressor, receives the refrigerant, exchanges heat with air in the curing barn, and increases the return air temperature of the curing barn when condensing the refrigerant; the evaporator is connected with the condenser through the supercooling defrosting section and is used for receiving the refrigerant and sending the refrigerant back to the compressor; the supercooling defrosting section is arranged at the outlet end of the condenser and passes through the bottom of the evaporator, is used for improving the supercooling degree, and raises the temperature of the bottom of the evaporator by utilizing the refrigerant to prevent frosting. This frostless heat pump drying device can realize improving the heating capacity of heat pump, prevents to frost, improves the technological effect of drying efficiency and stoving effect.
Description
Technical Field
The application relates to the technical field of drying equipment, in particular to a frostless heat pump drying device.
Background
At present, in the field of drying agricultural products such as tobacco leaves, medlar, rice and the like, the temperature of dry balls and wet balls in a curing barn needs to be matched with a process curve, and the temperature deviation is +/-1 ℃. When roast room temperature is higher than the target value, current heat pump drying-machine will introduce the new trend and carry out the heat transfer or will roast the room in the high temperature and high humidity air discharge outdoor in order to reach cooling dehumidification effect, this mode will lead to the heat to run off.
Most of the existing drying units adopt the traditional process, high-humidity gas in the baking room is directly exhausted into the atmosphere, a large amount of heat is lost, and baking materials in the baking room are polluted; in addition, in the winter operation state, the heat attenuation caused by the frosting of the heat exchanger and the temperature reduction in the curing barn in the defrosting process lead to low efficiency and unsatisfactory drying effect.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a frostless heat pump drying device, can realize improving the heating capacity of heat pump, prevent to frost, improve the technological effect of drying efficiency and stoving effect.
The embodiment of the application provides a frostless heat pump drying device, which comprises a compressor, a condenser, an evaporator and a supercooling defrosting section;
the compressor is used for sucking refrigerant and compressing the refrigerant;
the condenser is connected with the compressor, receives the refrigerant, exchanges heat with air in the curing barn, and increases the return air temperature of the curing barn when condensing the refrigerant;
the evaporator is connected with the condenser through the supercooling defrosting section and is used for receiving the refrigerant and sending the refrigerant back to the compressor;
the supercooling defrosting section is arranged at the outlet end of the condenser and passes through the bottom of the evaporator, is used for improving the supercooling degree, and raises the temperature of the bottom of the evaporator by utilizing the refrigerant to prevent frosting.
In the implementation process, the bottom of the evaporator which is frosted most easily in the low-temperature working process is provided with the supercooling defrosting section, and the refrigerant behind the condenser is used for providing heat for the bottom of the evaporator, so that frosting is prevented, the supercooling degree is improved, the heating capacity of the heat pump is increased, the heating capacity of the heat pump is improved, frosting is prevented, and the technical effects of drying efficiency and drying effect are improved.
Further, the device also comprises an expansion valve which is arranged between the outlet end of the condenser and the inlet end of the evaporator.
In the implementation process, the expansion valve can throttle the refrigerant conveyed to the evaporator by the condenser, so that technical parameters such as the flow rate and the flow velocity of the refrigerant conveyed to the evaporator by the condenser are adjusted, the drying efficiency and the drying effect of the whole frostless heat pump drying device are adjusted, and the practicability of the frostless heat pump drying device is improved.
Further, the device also comprises a first fan, wherein the first fan is arranged above the condenser and used for conveying air to pass through the condenser and enter the curing barn.
In the implementation process, the first fan blows air and conveys the air to pass through the condenser, so that the heat exchange process of the refrigerant in the condenser and the air is realized, and the air conveyed to the curing barn is heated.
Further, the device also comprises a second fan which is arranged on the side of the evaporator and used for conveying the exhaust air of the curing barn to pass through the evaporator.
In the implementation process, the second fan introduces the exhaust air of the curing barn into the evaporator, so that the secondary recovery of heat can be carried out, the evaporation temperature is increased, and the heating capacity of the frostless heat pump drying device can be effectively increased.
Further, the device also comprises a heat exchanger, wherein the heat exchanger is arranged between the evaporator and the condenser and is used for mixing the exhaust air and outdoor fresh air of the curing barn and conveying the mixed air to the evaporator and the condenser.
In the implementation process, the flue-curing barn exhausts air and performs sensible heat exchange with indoor fresh air through the heat exchanger, partial heat is recovered, the exhausted air after passing through the heat exchanger is introduced into the evaporator, secondary recovery of heat is performed, the evaporation temperature is increased, and the heating capacity of the heat pump can be effectively increased.
Furthermore, the device also comprises a fresh air valve, wherein the fresh air valve is arranged at the inlet end of the heat exchanger and used for providing outdoor fresh air for the heat exchanger.
In the implementation process, the fresh air valve can provide outdoor fresh air for the heat exchanger, and the heat exchange efficiency of the heat exchanger is improved.
Further, the device also comprises a third fan, and the third fan is arranged at the outlet end of the heat exchanger.
In the implementation process, the third fan is arranged at the outlet end of the heat exchanger to blow air, so that the heat exchange efficiency of the heat exchanger is further improved.
Further, the device also comprises a defrosting valve which is respectively connected with the outlet end of the compressor and the inlet end of the evaporator.
In the implementation process, the defrosting valve can be used for connecting or closing a refrigerant channel between the outlet end of the compressor and the inlet end of the evaporator, so that the operation mode of the frostless heat pump drying device is adjusted, and the universal use of the frostless heat pump drying device can be improved by selecting a proper operation mode under the condition.
Furthermore, the device also comprises a cold quantity regulating valve which is respectively connected with the inlet end of the compressor and the inlet end of the evaporator.
In the implementation process, the cold quantity regulating valve can regulate the flow of the refrigerant between the outlet end of the compressor and the inlet end of the evaporator, so that the technical parameters such as the flow, the flow speed and the like of the refrigerant between the outlet end of the compressor and the inlet end of the evaporator 300 are regulated, the drying efficiency and the drying effect of the whole frostless heat pump drying device are regulated, and the practicability of the frostless heat pump drying device is improved.
Further, the device also comprises a water receiving tray which is arranged below the evaporator.
In the above implementation process, the water pan is disposed below the evaporator, and can contain water drops falling from the evaporator 300 during operation.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a frostless heat pump drying device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of another frostless heat pump drying device provided in the embodiment of the present application;
fig. 3 is a refrigerant flow chart of a frostless heat pump drying device according to an embodiment of the present disclosure;
fig. 4 is an air flow diagram of a frostless heat pump device according to an embodiment of the present application;
fig. 5 is an air flow chart of another frostless heat pump drying device provided in the embodiment of the present application;
fig. 6 is an air flow chart of another frostless heat pump drying device provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
An object of the embodiment of the application is to provide a frostless heat pump drying device, which can be applied to the field of drying in a curing barn, such as drying of products such as tobacco leaves, medlar, rice and the like; this frostless heat pump drying device sets up the supercooling defrosting section through the bottom of the evaporimeter that frosts most easily at low temperature during operation, utilizes the refrigerant behind the condenser to provide the heat for the evaporimeter bottom to prevent frosting, and improve the super-cooled rate, and then increase the heating capacity of heat pump, thereby realize improving the heating capacity of heat pump, prevent frosting, improve the technological effect of drying efficiency and stoving effect.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a frostless heat pump drying device according to an embodiment of the present application, and includes a compressor 100, a condenser 200, an evaporator 300, and a supercooling defrosting section 400.
Illustratively, the compressor 100 is used to draw in and compress refrigerant.
Illustratively, the compressor 100(compressor), which is a driven fluid machine that raises low-pressure gas to high-pressure gas, is a heart of a cooling/heating system. The refrigerating/heating cycle is powered by sucking low-temperature and low-pressure refrigerant gas from the air suction pipe, driving the piston to compress the refrigerant gas through the operation of the motor, and discharging high-temperature and high-pressure refrigerant gas to the exhaust pipe.
Illustratively, the condenser 200 is coupled to the compressor 100, receives refrigerant, and exchanges heat with air within the baking chamber, increasing the baking chamber return air temperature as the refrigerant condenses.
Illustratively, the Condenser 200(Condenser), which is a component of a cooling/heating system, is one type of heat exchanger that converts a gas or vapor into a liquid to transfer the heat from the tubes to the air in the vicinity of the tubes in a rapid manner. The condenser operation is exothermic and therefore the condenser temperature is high.
Illustratively, the evaporator 300 is connected to the condenser 200 through a sub-cooling defrosting section 400 for receiving and returning refrigerant to the compressor 100.
Illustratively, the supercooling defrosting section 400 is provided at the outlet end of the condenser 200 and passes through the bottom of the evaporator 300 for increasing the supercooling degree and raising the temperature of the bottom of the evaporator using a refrigerant to prevent frosting.
In some embodiments, the high-temperature and high-pressure gaseous refrigerant coming out of the compressor 100 is condensed into a liquid state by the condenser 200, emits heat, increases the supercooling degree of the evaporator 300 after emitting heat by the cold defrosting section 400, absorbs heat by the evaporator 300 to become a low-temperature and low-pressure gaseous refrigerant, and finally returns to the compressor 100 for circulation.
In some implementation scenes, the frostless heat pump drying device can be applied to the field of drying in a curing barn, such as drying of products such as tobacco leaves, medlar, rice and the like; this frostless heat pump drying device sets up subcooling defrosting section 400 through the bottom of the evaporimeter 300 that frosts most easily at low temperature during operation, utilizes the refrigerant behind condenser 200 to provide the heat for evaporimeter 300 bottom to prevent frosting, and improve the super-cooled rate, and then increase the heating capacity of heat pump, thereby realize improving the heating capacity of heat pump, prevent frosting, improve the technological effect of drying efficiency and stoving effect.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another frostless heat pump drying device according to an embodiment of the present disclosure, where the frostless heat pump drying device includes a compressor 100, a condenser 200, an evaporator 300, a supercooling defrosting section 400, an expansion valve 110, a defrosting valve 120, a cooling capacity adjusting valve 130, a first fan 210, and a second fan 310.
It should be understood that the compressor 100, the condenser 200, the evaporator 300, and the supercooling defrosting section 400 have been described in detail above, and thus, a detailed description thereof will be omitted to avoid redundancy.
Illustratively, the expansion valve 110 is disposed between the outlet end of the condenser 200 and the inlet end of the evaporator 300.
For example, the expansion valve 110 may throttle the refrigerant delivered from the condenser 200 to the evaporator 300, so as to adjust technical parameters such as the flow rate and the flow velocity of the refrigerant delivered from the condenser 200 to the evaporator 300, thereby adjusting the drying efficiency and the drying effect of the whole frost-free heat pump drying device, and improving the practicability of the frost-free heat pump drying device.
Illustratively, a first fan 210 is disposed above the condenser 200 for conveying air through the condenser 200 and into the baking chamber.
Illustratively, the first blower 210 blows air through the condenser 200 to perform a heat exchange process between the refrigerant in the condenser 200 and the air, thereby heating the air delivered to the curing barn.
Illustratively, a second fan 310 is disposed to the side of the evaporator 300 for conveying the flue-cured barn exhaust air through the evaporator.
Exemplarily, the second fan 310 introduces the exhaust air of the curing barn into the evaporator 300, so that the secondary recovery of heat can be performed, the evaporation temperature can be increased, and the heating capacity of the frostless heat pump drying device can be effectively increased.
Illustratively, the defrost valve 120 connects the outlet end of the compressor 100 and the inlet end of the evaporator 300, respectively.
For example, the defrosting valve 120 may open or close a refrigerant passage between an outlet end of the compressor 100 and an inlet end of the evaporator 300, thereby adjusting an operation mode of the frost-free heat pump drying apparatus, and if an appropriate operation mode is selected, the general usability of the frost-free heat pump drying apparatus may be improved.
In some embodiments, the defrost valve 120 is a solenoid valve. For example, a solenoid valve (Electromagnetic valve) is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, so that the control precision and flexibility can be ensured.
Illustratively, the cold flow regulating valve 130 is connected to the inlet side of the compressor and the inlet side of the evaporator, respectively.
In some embodiments, the cooling capacity adjusting valve 130 may adjust the flow of the refrigerant between the outlet end of the compressor 100 and the inlet end of the evaporator 300, so as to adjust the technical parameters such as the flow and the flow rate of the refrigerant between the outlet end of the compressor 100 and the inlet end of the evaporator 300, thereby adjusting the drying efficiency and the drying effect of the whole frost-free heat pump drying device, and improving the practicability of the frost-free heat pump drying device.
In some embodiments, in the normal operation mode of the frost-free heat pump drying apparatus, the defrosting valve 120 is closed, the high-temperature and high-pressure gaseous refrigerant coming out of the compressor 100 is condensed into a liquid state by the condenser 200, releases heat to the evaporator 300 by the cold defrosting section 400 to increase the supercooling degree, throttles by the expansion valve 110, absorbs heat by the evaporator 300 to become a low-temperature and low-pressure gaseous refrigerant, and finally returns to the compressor 100 for circulation. In the above operation process, the air transferred into the baking room is heated, thereby completing the drying step in the baking room.
In some implementation scenarios, when the external environment temperature is low, the evaporator 300 may be frosted, thereby affecting the operation efficiency of the whole frostless heat pump drying device; at this time, the defrost valve 120 is opened, and the evaporator 300 can be defrosted.
Referring to fig. 3, fig. 3 is a refrigerant flow chart of a frostless heat pump drying device according to an embodiment of the present application.
Illustratively, the defrosting valve 120 is opened, a part of the high-temperature and high-pressure gaseous refrigerant is condensed into liquid refrigerant through the condenser 200, releases heat through the cold defrosting section 400 to increase the supercooling degree of the evaporator 300, is throttled through the expansion valve 110, absorbs heat through the evaporator 300 to become low-temperature and low-pressure gaseous refrigerant, and another part of the low-temperature and low-pressure gaseous refrigerant passes through the cold regulating valve 130, enters the evaporator 300 to be defrosted, and finally returns to the compressor 1 to circulate. In the operation process, the air conveyed into the curing barn is heated, so that the drying step in the curing barn is completed; meanwhile, the defrosting valve 120 is opened to form a hot gas bypass circuit, and part of the exhaust gas of the compressor 100 is introduced into the inlet end of the evaporator 300 to be defrosted, so that the defrosting efficiency of the evaporator 300 is effectively improved, and the stability and reliability of the frostless heat pump drying device during operation are guaranteed.
Referring to fig. 4, fig. 4 is an air flow chart of a frost-free heat pump apparatus according to an embodiment of the present disclosure.
Illustratively, the frostless heat pump drying device further comprises a heat exchanger 500, wherein the heat exchanger 500 is arranged between the evaporator 300 and the condenser 200 and is used for mixing the exhaust air of the curing barn 600 and the fresh air outside and conveying the mixed air to the evaporator 300 and the condenser 200.
Illustratively, the sensible heat exchange is performed between the exhaust air of the curing barn 600 and the indoor fresh air through the heat exchanger 500, part of heat is recovered, the exhaust air passing through the heat exchanger 500 is introduced into the evaporator 300, the secondary recovery of the heat is performed, the evaporation temperature is increased, and the heating capacity of the heat pump can be effectively increased.
Exemplarily, the frostless heat pump drying device further includes a fresh air valve 510, and the fresh air valve 510 is disposed at the inlet end of the heat exchanger 500, and is used for providing outdoor fresh air for the heat exchanger 500.
Illustratively, the fresh air valve 510 can provide outdoor fresh air for the heat exchanger 500, so as to improve the heat exchange efficiency of the heat exchanger.
Exemplarily, the frost-free heat pump drying apparatus further includes a third fan 520, and the third fan 520 is disposed at an outlet end of the heat exchanger 500.
Illustratively, the third fan 520 is disposed at the outlet end of the heat exchanger 500 for blowing air, thereby further improving the heat exchange efficiency of the heat exchanger.
In some embodiments, the frost-free heat pump drying apparatus further includes a back air check valve 530.
Illustratively, the non-return valve 530 is disposed between the evaporator 300 and the heat exchanger 500 in the direction of the flue-curing barn 600 exhaust, preventing fresh outdoor air from entering the flue-curing barn 600 in the opposite direction of the flue-curing barn 600 exhaust.
In some embodiments, the frost-free heat pump drying device operates in a cooling and dehumidifying (defrosting function) mode, at this time, the non-return air valve 530 is opened along the air exhaust direction of the flue-curing barn 600, the second fan 310, the third fan 520 and the fresh air valve 510 are opened, under the action of the third fan 530, part of the high-temperature and high-humidity return air of the flue-curing barn 600 performs sensible heat exchange with the outdoor fresh air in the heat exchanger 500, the return air of the flue-curing barn 600 is cooled (but has a higher temperature than the ambient temperature) and is exhausted to the external environment through the evaporator 300 (which can melt the surface frost layer), the outdoor fresh air is heated and then mixed with the return air of the flue-curing barn 600, and the mixture is sent back to the flue-curing barn 600. In the operation process, the frostless heat pump drying device recovers the heat of the exhaust air of the curing barn while dehumidifying, and has the defrosting function.
In some embodiments, the frost-free heat pump drying apparatus further includes a water pan 700 disposed below the evaporator 300.
Illustratively, the drip tray 700 is disposed below the evaporator 300 and may receive water drops that fall from the evaporator 300 during operation.
Referring to fig. 5, fig. 5 is an air flow chart of another frostless heat pump drying device according to an embodiment of the present application.
Illustratively, the non-return air valve 530 is closed, the second fan 310 and the first fan 210 are opened, the fresh air valve 510 is closed, and return air of the curing barn 600 is heated by the condenser 200 and then returned to the curing barn under the action of the first fan 210, so that circulation is formed. In the operation process, the temperature of the outdoor fresh air is reduced after passing through the evaporator 300, and the moisture of the air is condensed into liquid water and falls to the water pan 700, and then the liquid water is discharged to the outside.
Referring to fig. 6, fig. 6 is an air flow chart of another frostless heat pump drying device according to an embodiment of the present application.
Illustratively, the frostless heat pump drying device works in a constant temperature dehumidification (defrosting function) mode, the refrigerant circuit is the same as the refrigerant circuit shown in fig. 2, the non-return air valve 530 is opened along the air exhaust direction of the baking room 600, the first fan 210, the second fan 310 and the third fan 520 are opened, the fresh air valve 510 is opened, part of high-temperature and high-humidity return air of the baking room 600 performs sensible heat exchange with outdoor fresh air in the heat exchanger 500, the temperature of the return air of the baking room 600 is reduced (but higher than the ambient temperature), the return air and the outdoor fresh air are mixed and exhausted to the external environment through the evaporator 300 (which can melt the surface frost layer), the outdoor fresh air is mixed with the return air of the baking room 600 after being heated, and the return air is sent back to the baking room through the heating of the condenser 200 under the action of.
Exemplarily, the frostless heat pump drying device has the following advantages: the energy efficiency is high, the sensible heat exchange is carried out on the exhaust air of the curing barn 600 and the indoor fresh air through the heat exchanger 500, partial heat is recovered, the exhaust air passing through the heat exchanger 500 is introduced into the evaporator 300 for secondary heat recovery, the evaporation temperature is increased, and the heating capacity of a heat pump system can be effectively increased; the frosting is prevented, the air exhausted from the curing barn 600 is introduced into the evaporator 300, and the surface of the fins of the evaporator 300 is ensured not to be frosted easily while the heat is recovered; the bottom of the evaporator 300 which is most prone to frost is provided with a supercooling defrosting section 400, and the refrigerant behind the condenser 200 is used for providing heat for the bottom of the evaporator 300 to prevent frost from forming, improve the supercooling degree and increase the heating capacity of the system; a hot gas bypass circuit is provided to introduce a portion of the compressor 100 discharge gas into the inlet end of the evaporator 300 for defrosting. Therefore, the frostless heat pump drying device can ensure that the evaporator 300 does not frost in the operation process, avoid the large temperature fluctuation of the curing barn 600 and ensure the stability and reliability in the drying process.
In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.
It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.
In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A frostless heat pump drying device is characterized by comprising a compressor, a condenser, an evaporator and a supercooling defrosting section;
the compressor is used for sucking refrigerant and compressing the refrigerant;
the condenser is connected with the compressor, receives the refrigerant, exchanges heat with air in the curing barn, and increases the return air temperature of the curing barn when condensing the refrigerant;
the evaporator is connected with the condenser through the supercooling defrosting section and is used for receiving the refrigerant and sending the refrigerant back to the compressor;
the supercooling defrosting section is arranged at the outlet end of the condenser and passes through the bottom of the evaporator, is used for improving the supercooling degree, and raises the temperature of the bottom of the evaporator by utilizing the refrigerant to prevent frosting.
2. The frost-free heat pump drying apparatus of claim 1, further comprising an expansion valve disposed between an outlet end of the condenser and an inlet end of the evaporator.
3. The frost-free heat pump drying apparatus of claim 1, further comprising a first fan disposed above the condenser for conveying air through the condenser and into the baking chamber.
4. The frost-free heat pump drying apparatus of claim 1, further comprising a second fan disposed at a side of the evaporator for conveying exhaust air of the curing barn through the evaporator.
5. The frost-free heat pump drying device of claim 1, further comprising a heat exchanger disposed between the evaporator and the condenser for mixing the exhaust air of the curing barn with the fresh outdoor air and delivering the mixed air to the evaporator and the condenser.
6. The frostless heat pump drying device of claim 5, further comprising a fresh air valve, wherein the fresh air valve is disposed at the inlet end of the heat exchanger, and is used for providing the outdoor fresh air for the heat exchanger.
7. The frost-free heat pump drying apparatus of claim 6, further comprising a third fan disposed at an outlet end of the heat exchanger.
8. The frost-free heat pump drying apparatus of claim 1, further comprising a defrosting valve, wherein the defrosting valve is connected to an outlet end of the compressor and an inlet end of the evaporator, respectively.
9. The frost-free heat pump drying device of claim 1, further comprising a cooling capacity adjusting valve, wherein the cooling capacity adjusting valve is connected to the inlet end of the compressor and the inlet end of the evaporator respectively.
10. The frost-free heat pump drying apparatus of claim 1, further comprising a water pan disposed below the evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020941536.4U CN212253396U (en) | 2020-05-28 | 2020-05-28 | Frostless heat pump drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020941536.4U CN212253396U (en) | 2020-05-28 | 2020-05-28 | Frostless heat pump drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212253396U true CN212253396U (en) | 2020-12-29 |
Family
ID=73978640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020941536.4U Active CN212253396U (en) | 2020-05-28 | 2020-05-28 | Frostless heat pump drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212253396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115200326A (en) * | 2022-06-24 | 2022-10-18 | 青岛海尔空调电子有限公司 | Drying system for tobacco and control method for drying tobacco |
-
2020
- 2020-05-28 CN CN202020941536.4U patent/CN212253396U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115200326A (en) * | 2022-06-24 | 2022-10-18 | 青岛海尔空调电子有限公司 | Drying system for tobacco and control method for drying tobacco |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106546028B (en) | Frostless type refrigerant dual cycle fresh air conditioning unit | |
| CN109163395B (en) | Air conditioning system and control method thereof | |
| US10047991B2 (en) | Heat pump | |
| CN113446754B (en) | Double-cold-source air source heat pump unit with total heat recovery | |
| CN201302243Y (en) | Energy-saving full fresh air dehumidifier machine | |
| CN108679747B (en) | Fresh air dehumidifying air conditioning system | |
| CN104220816B (en) | Air conditioner | |
| CN111998565B (en) | Double-temperature air conditioning system and control method thereof | |
| CN208595631U (en) | A kind of fresh air dehumidification air-conditioning system | |
| CN110360833A (en) | A kind of varying duty dehumidifying heat pump drying system | |
| US4502292A (en) | Climatic control system | |
| CN109247610A (en) | A kind of the refrigerating and heating type closed cycle heat pump baking room and its application method of adjustable airflow direction | |
| CN104848497A (en) | Air conditioner | |
| US6843425B2 (en) | Air conditioner and method for controlling the same | |
| WO2022267886A1 (en) | Anti-frost control method for air conditioner and air conditioner | |
| CN113446756A (en) | Four-pipe air source heat pump unit with variable-speed compressor | |
| CN212253396U (en) | Frostless heat pump drying device | |
| CN107514830A (en) | A kind of single multi-stage compression automatic conversion Multifunctional heat pump system | |
| CN109579337B (en) | Cascade hot air control system and method | |
| CN113203136B (en) | Double-efficient carbon dioxide air conditioner heat pump system | |
| CN106322810A (en) | Frostless air source heat pump system based on humidity adjustment and evaporative cooling | |
| KR101122725B1 (en) | Heat pump type cooling and heating apparatus | |
| CN111156794A (en) | Curing barn system for secondarily recycling dehumidification heat | |
| CN217686493U (en) | Air source heat pump drying unit | |
| CN112327975B (en) | Control method of efficient multistage drying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |